Propeller pump



I I 1,619,514 March 1 7' s. w. HOLMAN PROPELLER PUMP Filed June 9, 1925 Patented Mar. 1, 1927.

U NITED S TAT-ES "PATE NT OFFICE.

STEPHEN W HOL'MAN, OF MARMARTI-I, NORTH DAKOTA, ASSIGNOR TO THE HOLMAN PUMP MANUFACTURING COMPANY, A CORPORATION OF SOUTH, DAKOTA.

PROPELLER PUMP.

Application filed June 9,

This invention relates topropeller pumps and. has for an object to provide a pump of the class embodying new and improved fea turcs of construction, functions'and opera tion.

A further object of the invention is'to provide a propeller pump having' an improved type of gate operating in conjunction with the propeller element.

Afurther object of the invention is to provide in combination with a slotted rotating gate a propeller element proportioned to simultaneously move the fluid upon which it is acting and serve as a worm for rotating the slotted gate.

lVith these and other objects in view, the invention comprises certain novel parts, elements, units, combinations, constructions, interactions, mechanical movements and functions as disclosed in the drawings together with mechanical and functional equivalents thereof as will be hereinafter more fully described and claimed.

In the drawings:

Figure 1 is a view of the pump elements in edge elevation with the housing shown in section to exhibit such elements. I

Figure 2is a view of the propeller in side elevation and the gate in diametrical section, one side of the housing being removed.

Figure 3 is a horizontal sectional view taken on line 3-3 of Figure 2.

Like characters of reference indicate corresponding parts throughout the several views.

The improved propeller pump which forms the subject matter of this application comprises a housing composed of opposite parts 10 and 11 secured together in any usual and approved manner as by bolting at 12. The housing comprises a propeller chamber 13 and a gate chamber 14, the former being constructed with a horizontal axis and the latter with a vertical axis. The horizontal axis of the propeller chamber is exemplified ,by the bearings 15 in which is journaled a shaft 16. The housing is rigidly secured to a base 17 and the shaft 16 is further journaled in a bearing 18 also rigidly secured to the base 17 and carries a pulley or other means of applying power indicated conventionally at 19.

lVithin the propeller chamber and carried by the shaft 16 is the propeller which comprises a hub 20 rigidly secured to the shaft 16 and vanes 21 preferably castintegral with 'of said chamber so that as said propeller rotatcswithin said chamber it rotates in reasonably watertight condition so that water or other fluid introduced through the inlet 22 is carried by the rotation of said propeller in the direction indicated by the arrows in the figures and discharged into the gate chamber 14-. At Figure 2, the inlet 22 is shown with an offset portion 23 in dotted lines, it being preferred that this inlet be tapered at this point although such is immaterial to the operation.

lVithin the gate chamber 1 rotating gate 24: is mounted. The general form of this gate 24 is cylindrical with a flange 25 at its upper end bearing upon the shoulder 26 0f the housing and heldin such relation by a shoulder 27 of adome 28' rigidly secured to the top of the gate chamber in any approved manner as by the bolts 29. This dome 28 is provided with a connection 30 to which may be applied a pipe or other conduit for taking away the water raised or forced by the ump. 7

The cylindrical sides of the gate '24 are slotted atj31, such slots being properly propo'rtioned'to permit the vanes 21 of the propeller to pass therethrough and properlyspaced so that, as the propeller rotates with afin constantly in engagement with one of the slots, it serves as a worm for rotating the gate in. the direction indicated by the arrows at the several figures. It will be noted that, as each one of the fins leaves one of the slots 31, the rotation of said gate is such that it closes that slot by passing be yond the corner 32 of the gate chamber (see Figure 3) and that the slot for the reception of the next vane is still covered by the corner 33 until the rotation of the propeller has been such that the next vane is about to enter said slot when it emerges from the corner 33 and permits the next vane to enter therein. All of the slots 31 are, therefore, substantially constantly filled by the vanes which rotate in proper timed relation to the rotation of the gate forming at all times, therefore, a reasonably water tight bafile for the passage of the fluid propelled by the propeller.

In operation, it will be apparent that the inflowing water or fluid will be connected with the connection 22 and the outflowing water or fluid connected with the connection 30. The propeller will now be rotated by being driven in the direction indicated by the arrows at the'several figures and, as each vane passes by the inlet 22, it imprisons the water which has flowed in its passage the preceding vane and carries such imprisoned volume of water about with it in its rotation until it discharges it into the gate chamber and further rotation with the vane is prevented by the interposition of the slotted gate, whereupon the water or other fluid assumes such degree of pressure Within the dome 28 that it will flow outwardly through the connection 30 and the attached conduits.

What I claim to be new is:

l. A propeller pump comprising a housing embodying a cylindrical propeller chamber closed at both ends, a cylindrical gate chamber closed at the bottom, the axes of which chamber are respectively horizontal and vertical, a propeller rotating within the propeller chamber and provided with a plurality of spiral fins making substantial contact with all walls of the chamber, and a gate fitting within the gate chamber constructed substantially as a cylinder having its cylindrical walls provided with spaced slots, properly positioned and proportioned to embrace and permit the passage of and make continuous contact with the vanes and to serve in conjunction with the vanes as a worm to continuously rotate said cylindrical 'ate.

b 2. A propeller pump comprising a housing having a cylindrical propeller chamber closed at both ends, a cylindrical gate chamber closed at both ends and in communication with the propeller chamber, a gate lo; cated within the gate chamber constructed as a cylinder havlng its side walls slotted at uniform intervals, means mounting said gate to provide for rotation about a vertical axis, and a propeller mounted in and substantially filling the propeller chamber, said propeller being provided with spirally positioned vanes properly proportioned and positioned to continuously engage within the slots of the gate to fill said slots against passage of fluid and in their movement to rotate the gate continuously wormwise.

3. Av propeller pump comprising a housing having a cylindrical. propeller chamber, a cylindrical gate chamber closed at the bottom and in communication with the pros puller chamber, a gate mounted in the gate chamber and constructedas a cylinder having its side walls slotted at uniform intervals, a flange extending circumferentially beyond one end of the gate and bearing upon the top of the housing at the gate chamber limit, a dome secured upon the housing and cover ing the gate chamber and communicating with the interior of the chamber and the gate, said dome being provided with an out" let, a propeller mounted to rotate upon a horizontal axis within the propeller chamber and provided with a plurality of spirally positioned vanes in continuous contact with the slots of the gate, the said propeller as an entirety substantially filling the propeller chamber, and the vanes proportioned and positioned to each substantially fill one of the slots of the gate and to pass therethrough wormwise to continuously rotate said gate in synchronism to the rotation of the propeller.

In testimony whereof I aflix my signature.

STEPHEN V. HOLMAN. 

